I think (others can weigh in here) scanning a room would be a bit much
for the makerscanner (ps3 camera and laser line). I've scanned a few
small objects with mine and while it might produce something, I don't
think you will get the resolution you might hope for if you do a room.
As you get further from an object you loose the ability to clearly
resolve the line and slight changes in the line produced. Precision
control of the laser orientation might help this process a bit.
The turn table idea is interesting and I believe I've seen other
implementations of scanners that do this to scan a room. I haven't seen
that functionality in the existing makerscanner software automatically
If you really insist on doing this, you could scan surfaces and parts of
the room in small amounts, and stitch the created scans together in
modelling software.